package com.soboot.gateway.provider;

import com.soboot.gateway.resource.RouteProperties;
import com.soboot.gateway.resource.RouteResource;
import lombok.AllArgsConstructor;
import org.springframework.cloud.gateway.config.GatewayProperties;
import org.springframework.cloud.gateway.route.RouteLocator;
import org.springframework.cloud.gateway.support.NameUtils;
import org.springframework.context.annotation.Primary;
import org.springframework.stereotype.Component;
import springfox.documentation.swagger.web.SwaggerResource;
import springfox.documentation.swagger.web.SwaggerResourcesProvider;

import java.util.ArrayList;
import java.util.List;

/**
 * @Author:
 * @createTime: 2022年09月21日 09:20:48
 * @version:
 * @Description:
 * @Copyright:
 */
@Primary
@Component
@AllArgsConstructor
public class SwaggerProvider implements SwaggerResourcesProvider {

    public static final String API_URI = "/v2/api-docs";
    private final RouteLocator routeLocator;
    private final GatewayProperties gatewayProperties;

    private final RouteProperties routeProperties;

    @Override
    public List<SwaggerResource> get() {
        List<SwaggerResource> resources = new ArrayList<>();
        List<String> routes = new ArrayList<>();
        //取出gateway的route
        routeLocator.getRoutes().subscribe(route -> routes.add(route.getId()));
        //结合配置的route-路径(Path)，和route过滤，只获取有效的route节点
        gatewayProperties.getRoutes().stream().filter(routeDefinition -> routes.contains(routeDefinition.getId()))
                .forEach(routeDefinition -> {
                    routeDefinition.getPredicates().stream()
                            .filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
                            .filter(predicateDefinition -> !"ot-auth".equalsIgnoreCase(routeDefinition.getId()) ||
                                    !"ot-service-data-api-mapping".equalsIgnoreCase(routeDefinition.getId()) ||
                                    !"ot-service-data-console".equalsIgnoreCase(routeDefinition.getId()))
                            .forEach(predicateDefinition -> resources.add(swaggerResource(routeDefinition.getId(),
                                    predicateDefinition.getArgs().get(NameUtils.GENERATED_NAME_PREFIX + "0")
                                            .replace("/**", API_URI))));
                });
        return resources;
        //中文备注
       /* List<SwaggerResource> resourceList = new ArrayList<>();
        List<RouteResource> routeResourceList = routeProperties.getResources();
        routeResourceList.forEach(routeResource -> resourceList.add(swaggerResource(routeResource)));
        return resourceList;*/
    }

    private SwaggerResource swaggerResource(RouteResource routeResource) {
        SwaggerResource swaggerResource = new SwaggerResource();
        swaggerResource.setName(routeResource.getName());
        swaggerResource.setLocation(routeResource.getLocation().concat(API_URI));
        swaggerResource.setSwaggerVersion(routeResource.getVersion());
        return swaggerResource;
    }

    private SwaggerResource swaggerResource(String name, String location) {
        SwaggerResource swaggerResource = new SwaggerResource();
        swaggerResource.setName(name);
        swaggerResource.setLocation(location);
        swaggerResource.setSwaggerVersion("2.0");
        return swaggerResource;
    }
}
